Multisite Hosting Transfer: Images Not Working

I am wrestling with a multisite migration from one host server to another. Images are not working on the new installation.

The old multisite installation on the old host server is on old version of WP – it’s pre 3.5 and all images are stored in blogs.dir.

The new installation is WP 4.1.1. I believe images are just stored in uploads.

I have tried re-uploading images to the uploads file but that does not work: images are broken. I tried recreating the blogs.dir folder and that lead to the same result.

My .htaccess file reads as below. Is there a simple way to redirect images in that blogs.dir folder to the uploads folder?

# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

# END WordPress

Thank you!
Jeff